import java.util.Scanner;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: Administrator
 * Date: 2023-03-19
 * Time: 13:26
 */
class Base {

    private int x;
    private int y;

    public Base(int x, int y) {
        this.x = x;
        this.y = y;
    }

    public int getX() {
        return x;
    }

    public int getY() {
        return y;
    }

}

class Sub extends Base {
    private int z;
    public Sub(int x, int y, int z) {
        //write your code here
        super(x,y);
        this.z = z;
    }

    public int getZ() {
        return z;
    }


    public int calculate() {
        return super.getX() * super.getY() * this.getZ();
    }

}
public class Test{
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        while (scanner.hasNextInt()) {
            int x = scanner.nextInt();
            int y = scanner.nextInt();
            int z = scanner.nextInt();
            Sub sub = new Sub(x, y, z);
            System.out.println(sub.calculate());
        }
    }
}
/*class Base {
    Base() {
        System.out.print("Base");
    }
}
public class Alpha extends Base {

    public static void main( String[] args ) {
        new Alpha();//1
        //调用父类无参的构造方法
        new Base();//2
    }
}*/

/*public class Test{
    public String toString() {
        System.out.print("aaa");
        return "bbb";
    }


    public static void main(String[] args) {
        Test test = new Test();
        System.out.println(test);
    }*/
/*    static int cnt = 6;
    static{
        cnt += 9;
    }
    public static void main(String[] args){
        System.out.println("cnt="+cnt);
    }
    static{
        cnt /=3;
    };*/
//}
/*public class Person{

    private String name = "Person";

    int age=0;

//}

public class Child extends Person{

    public String grade;

    public static void main(String[] args){

        Person p = new Child();

        System.out.println(p.name);

    }

}*/
/*public class Person{

    private String name = "Person";

    int age=0;

}
public class Test {
    public String grade;
    public static void main(String[] args) {
        Person p = new Child();

        System.out.println(p.name);

    }
}*/
